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Double cone nanostructures are proposed for the ultimate anti-reflectivity of encapsulated silicon solar cells. The proposed design consists of high aspect ratio silicon nanocones covered by a polymeric layer textured with inverted nanocone structures. Both nanocones and inverted nanocones effectively suppress Fresnel reflection at each interface by means of gradient index effect, while the inverted...
We propose and experimentally demonstrate a novel method to fabricate subwavelength silica nanocone arrays with high aspect ratio (∼7) for multifunctional surfaces having anti-reflective, self-cleaning, and anti-fogging properties.
Tapered nanostructures with high aspect ratio were fabricated using high-throughput nanoimprint process. The replicated nanostructures have axially increasing effective refractive index, which enhances the optical transmission over a wide range of wavelengths and incident angles.
We have designed, fabricated and tested self-aligned angular vertical comb-drive (AVC) actuators by on-chip assembly technique using in-plane electrothermal actuators. The AVC actuators are fabricated on a silicon-on-insulator (SOI) wafer using three photomasks and three times of deep etching steps. The maximum optical scan angle of 30.7deg is achieved at 4.56 kHz under the sinusoidal driving voltage...
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